screen locks up

[gersh41]

Hi All,
My computer screen locks up after some Hr. of usage (~3), after each consecutive reboot sequence the time of play shortens up, I have done the following; 
   1) virus, malware scan, clene.
  2) Run WN XP file repair
  3) Removed the cover and checked for hot component, applied large external fan, no change.
Any ideas?

Gershon

[dahlarbear]

My guess would be that it's a "heat" issue.  Blow out dust within the computer case with "canned" air (not a regular vacuum cleaner).  Pay special attention to the CPU heat sink, memory modules, and video card.  Don't let the fan blades spin at supersonic speed from the canned air (as much fun as that might be).

Don't remove the CPU "heat sink" unless you're prepared to clean off and reapply the "thermal paste" to the interface plate between the two.  The thermal paste fills in the microscopic air pockets to facilitate the flow of heat from CPU to heat sink.

Look for and start monitoring any heat sensors your computer system may have (read their values under different processing loads).  I think you may access values through CMOS setup of system BIOS (not very convenient) or look for "free" software that provides access to them.  Ask if you need software recommendation.  Everyone has their favorites.

Hint:  Don't touch the computer chips.  Aside from being very "hot", you could damage them via an electro-static discharge.