Help: Computer locking up erractically

[Azaril000]

Hey all,

I've been having some problems with my pc crashing for a few months now. It seems to happen very randomly, like it could happen once 20-30 mins of the last crash, or go 1-3 hours between the last crash, or even a whole day!
It recently went a few days without a crash, but started happening again frequently.

Crashes seem to happen no matter what I doing, whether it be me on the internet, or playing a video game.

When it crashes, there is no BSOD, no restarts no turn off's just a freeze/lock up, which requires me to hit restart.

I've just cleaned my pc out with compressed air, but it seems to still be here.

Any ideas? No idea what tests to run

PC:
Windows Vista 64bit

Arctic Power 700W PSU

OCZ 4GB (2x2GB) PC2-9200C5 1150MHz Flex II Passive/WaterCooled Dual Channel DDR2

Intel Core 2 Quad Q9450 LGA775 'Yorkfield'

Arctic Cooling Freezer 7 Pro CPU Cooler

Asus P5Q Pro Intel P45 (Socket 775) PCI-Express DDR2 Motherboard

Creative XI-FI sound card

ATI Saphire 4870 Graphics card

 

[johnsparton10]

Know it may seem quite tedious buy could always try remove parts replace with working ones from a friend to try and single out the source, if it were me i would start with the ram.

 

[West]

Shamelessly copied and pasted from another thread

Run a check on the HDD? mine used to do this up untill 3 days ago when I replaced the HDD after a bad sector cropped up, used to do it all the time in Star Trek Online as well as at completley random points sometimes... might be worth running a check on your HDD

/West