I can only get make my AMD Athlon xp2000+ to work at 1250mHz

[laurentius]

If I set my FSB 133mHz (what it should be) Windows won't load. If I set it to anything between 100 and 133 it may boot is unstable and crashes randomly. At 100mHz it works fine...
Could it be a case of too high CPU temperature? External temp is currently (at 1250mHZ) 55C...fan speed 4680 rpm

System info:
AMD Athlon XP 2000+ Palomino on a Soltek 75FRV
512mb Kingston DDR-SDRAM PC3200

 

[Didou]

It shouldn't be that high when running at the proper, let alone when underclocked. You take a look inside & see if there isn't dust clogging the heatsink & the fan. If that is not the case the problem could be a bad heatsink installation, bad contact with the CPU core, lack of thermal paste, etc.

If all those are correct, there's always the possibility of the thermal probe reporting bad values. Did this system ever run in a reliable manner ?

 

[laurentius]

The problems started when I changed my mobo and RAM. On the previous mobo the CPU worked fine. Yeah, my case was pretty dusty but cleaning it up didn't make much difference.