Hello.

I have a very old MSI R4870-T2D512 OC Radeon HD 4870 512 MB video card.
Recently, I have been having crashes with video signal losses even if I
am not gaming, but watching a streaming YouTube video in my Mozilla's
SeaMonkey v2.35 web browser in my very old Windows XP Pro SP3 machine.

I noticed my video card was very hot outside on its vent and inside the
case. I checked the very old Catalyst Control Center v8.60 (can't use
the newer versions since they hard lock up rarely and randomly [no video
signal losses], and noticed its ATI Overdrive's status showing its fan
speed is at 0% even though its "Enable Manual Fan Control" option is
unchecked for automatic fan speed control. If it the card is very hot,
then shouldn't its fan be spinning (not 0%) by itself? Currently, I am
testing it with forced 55% fan speed to see if I still get crashes and
video signal losses. I wonder if my video card is broken with its heat
sensor?

Thank you in advance.
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