CPU insertion causes system to shut down after a few seconds

Hi - Celeron 900 seems to be stopping the system from starting - This is an
existing CPU but the system does not power on. I have checked the PSU with
tester and replacement - I have removed everything from the system and my
results are below.

1) With the CPU installed, the system starts up for a second and then dies
2) With CPU taken out, the system turns on and power stays on ( i do not
have a spare CPU to test this with)
3) If however RAM is taken out and CPU left in, then I get the RAM error
BIOS beeps but the system stays powered on

I am thinking still that this is the CPU - but have I miised anything. Your
help would be grateully received as I am trying o take my A+.

regards,
Jack

"Ja" wrote in message ...
Hi - Celeron 900 seems to be stopping the system from starting - This is
an
existing CPU but the system does not power on. I have checked the PSU with
tester and replacement - I have removed everything from the system and my
results are below.

1) With the CPU installed, the system starts up for a second and then dies
2) With CPU taken out, the system turns on and power stays on ( i do not
have a spare CPU to test this with)
3) If however RAM is taken out and CPU left in, then I get the RAM error
BIOS beeps but the system stays powered on

I am thinking still that this is the CPU - but have I miised anything.
Your
help would be grateully received as I am trying o take my A+.

regards,
Jack



P.S - The CPU fan is working all the time -

and have you tried it with a different ram stick? or
checked the ram elsewhere?

"Ja" wrote in message
...

"Ja" wrote in message
...
Hi - Celeron 900 seems to be stopping the system from
starting - This is
an
existing CPU but the system does not power on. I have checked
the PSU with
tester and replacement - I have removed everything from the
system and my
results are below.

1) With the CPU installed, the system starts up for a second
and then dies
2) With CPU taken out, the system turns on and power stays on
( i do not
have a spare CPU to test this with)
3) If however RAM is taken out and CPU left in, then I get
the RAM error
BIOS beeps but the system stays powered on

I am thinking still that this is the CPU - but have I miised
anything.
Your
help would be grateully received as I am trying o take my A+.

regards,
Jack



P.S - The CPU fan is working all the time -

"Pen" wrote in message
...
and have you tried it with a different ram stick? or
checked the ram elsewhere?

"Ja" wrote in message
...

"Ja" wrote in message
...
Hi - Celeron 900 seems to be stopping the system from
starting - This is
an
existing CPU but the system does not power on. I have checked
the PSU with
tester and replacement - I have removed everything from the
system and my
results are below.

1) With the CPU installed, the system starts up for a second
and then dies
2) With CPU taken out, the system turns on and power stays on
( i do not
have a spare CPU to test this with)
3) If however RAM is taken out and CPU left in, then I get
the RAM error
BIOS beeps but the system stays powered on

I am thinking still that this is the CPU - but have I miised
anything.
Your
help would be grateully received as I am trying o take my A+.

regards,
Jack



P.S - The CPU fan is working all the time -





Yes I have tried another RAM stick - but the system reacted the same as
before

To be frank, I'd suspect a PSU first in this case. CPUs that
function don't draw enough current to do what you describe as
they
usually are dead by then. The same for ram sticks

"Ja" wrote in message
...

"Pen" wrote in message
...
and have you tried it with a different ram stick? or
checked the ram elsewhere?

"Ja" wrote in message
...

"Ja" wrote in message
...
Hi - Celeron 900 seems to be stopping the system from
starting - This is
an
existing CPU but the system does not power on. I have
checked
the PSU with
tester and replacement - I have removed everything from
the
system and my
results are below.

1) With the CPU installed, the system starts up for a
second
and then dies
2) With CPU taken out, the system turns on and power
stays on
( i do not
have a spare CPU to test this with)
3) If however RAM is taken out and CPU left in, then I
get
the RAM error
BIOS beeps but the system stays powered on

I am thinking still that this is the CPU - but have I
miised
anything.
Your
help would be grateully received as I am trying o take my
A+.

regards,
Jack



P.S - The CPU fan is working all the time -





Yes I have tried another RAM stick - but the system reacted the
same as
before

I am no expert, but condition 3 would seem to indicate a memory
problem, or maybe some other component in the POST.

hawk

Ja wrote:
Hi - Celeron 900 seems to be stopping the system from starting - This is an
existing CPU but the system does not power on. I have checked the PSU with
tester and replacement - I have removed everything from the system and my
results are below.

1) With the CPU installed, the system starts up for a second and then dies
2) With CPU taken out, the system turns on and power stays on ( i do not
have a spare CPU to test this with)
3) If however RAM is taken out and CPU left in, then I get the RAM error
BIOS beeps but the system stays powered on

I am thinking still that this is the CPU - but have I miised anything. Your
help would be grateully received as I am trying o take my A+.

regards,
Jack

"hawk" wrote in message
...
I am no expert, but condition 3 would seem to indicate a memory
problem, or maybe some other component in the POST.

hawk

Ja wrote:
Hi - Celeron 900 seems to be stopping the system from starting - This is
an
existing CPU but the system does not power on. I have checked the PSU
with
tester and replacement - I have removed everything from the system and
my
results are below.

1) With the CPU installed, the system starts up for a second and then
dies
2) With CPU taken out, the system turns on and power stays on ( i do not
have a spare CPU to test this with)
3) If however RAM is taken out and CPU left in, then I get the RAM error
BIOS beeps but the system stays powered on

I am thinking still that this is the CPU - but have I miised anything.
Your
help would be grateully received as I am trying o take my A+.

regards,
Jack



I did try another working RAM stick and I try another PSU - thanks for all
your help - what else could it be - all cards where removed. (onboard
graphics)

"Pen" wrote in message
...
To be frank, I'd suspect a PSU first in this case. CPUs that
function don't draw enough current to do what you describe as
they
usually are dead by then. The same for ram sticks

"Ja" wrote in message
...

"Pen" wrote in message
...
and have you tried it with a different ram stick? or
checked the ram elsewhere?

"Ja" wrote in message
...

"Ja" wrote in message
...
Hi - Celeron 900 seems to be stopping the system from
starting - This is
an
existing CPU but the system does not power on. I have
checked
the PSU with
tester and replacement - I have removed everything from
the
system and my
results are below.

1) With the CPU installed, the system starts up for a
second
and then dies
2) With CPU taken out, the system turns on and power
stays on
( i do not
have a spare CPU to test this with)
3) If however RAM is taken out and CPU left in, then I
get
the RAM error
BIOS beeps but the system stays powered on

I am thinking still that this is the CPU - but have I
miised
anything.
Your
help would be grateully received as I am trying o take my
A+.

regards,
Jack



P.S - The CPU fan is working all the time -





Yes I have tried another RAM stick - but the system reacted the
same as
before





Someone installed a modem a few weeks ago - could this have somehow damaged
the motherboard to cause this ?

Well, the CPU stays powered when there is no memory. You get an error
and the POST stops. It could be the next step in the POST that causes
the problem. Is the battery that maintains power to the CMOS OK?

hawk

Ja wrote:

"hawk" wrote in message
...

I am no expert, but condition 3 would seem to indicate a memory
problem, or maybe some other component in the POST.

hawk

Ja wrote:

Hi - Celeron 900 seems to be stopping the system from starting - This is

an

existing CPU but the system does not power on. I have checked the PSU

with

tester and replacement - I have removed everything from the system and

my

results are below.

1) With the CPU installed, the system starts up for a second and then

dies

2) With CPU taken out, the system turns on and power stays on ( i do not
have a spare CPU to test this with)
3) If however RAM is taken out and CPU left in, then I get the RAM error
BIOS beeps but the system stays powered on

I am thinking still that this is the CPU - but have I miised anything.

Your

help would be grateully received as I am trying o take my A+.

regards,
Jack




I did try another working RAM stick and I try another PSU - thanks for all
your help - what else could it be - all cards where removed. (onboard
graphics)

"hawk" wrote in message
...
Well, the CPU stays powered when there is no memory. You get an error
and the POST stops. It could be the next step in the POST that causes
the problem. Is the battery that maintains power to the CMOS OK?

hawk

Ja wrote:

"hawk" wrote in message
...

I am no expert, but condition 3 would seem to indicate a memory
problem, or maybe some other component in the POST.

hawk

Ja wrote:

Hi - Celeron 900 seems to be stopping the system from starting - This
is

an

existing CPU but the system does not power on. I have checked the PSU

with

tester and replacement - I have removed everything from the system and

my

results are below.

1) With the CPU installed, the system starts up for a second and then

dies

2) With CPU taken out, the system turns on and power stays on ( i do
not
have a spare CPU to test this with)
3) If however RAM is taken out and CPU left in, then I get the RAM
error
BIOS beeps but the system stays powered on

I am thinking still that this is the CPU - but have I miised anything.

Your

help would be grateully received as I am trying o take my A+.

regards,
Jack




I did try another working RAM stick and I try another PSU - thanks for
all
your help - what else could it be - all cards where removed. (onboard
graphics)



Yes the bios battery is reading correctly - how would that cause it - is the
next step in POST. If the cpu is one of the first things to get checked
(before RAM?) on post then what would happen if the post did not find a
cpu -