Random Freeze on a new pc

[p3z]

System specs
i5 750 w/retail fan
msi gd65
xfx 4870 1g
2x2 gb A Data DDR3 1600
Antec 500w Earth watts
1 400 gig sata maxtor hd
Antec 180 case
3 120mm case fans
win xp pro sp2 32bit and ubuntu 9.10 64bit.

I can post fine but the screen will lock up randomly from right after windows loads to 10 minutes later. I made sure everything was stock in bios. I ran memtest86+ and it finished one complete pass error free before I stopped it. I've loaded ubuntu but the same problem exists, I've even had it freeze up during ubuntu install. I don't think I've had it freeze during safemode but I haven't used it in safemode for over 10 minutes. Checking the windows error logs gives me nothing, it just says the system stopped.

 

[Intexity]

well a full system list would be of help (look at my signature to see what i mean) could be a lack of voltage on psu... putting as much pertinent information as possible on your spec list makes it so others don't have to google each part

 

[mpilchfamily]

Try different video drivers. Now the PSU may or may not be an issue but it is right on the edge.

 

[brandonwh64]

if you heatsink properly installed? maybe loose and its heating up

 

[Intexity]

try a slightly bigger psu 500 watts may be just a little too low...

 

[p3z]

I also have a problem when booting up cold. It will start then stop and then start again a few times until it starts for good.

 

[dranthony]

make sure nothing is wrong with your harddisk (run chkdisc). Most of the time you won't get hard freezes though but rather blue screen of death. I would check your rails in bios for your power supply and see if you are getting the correct output. Also try the different drivers for vid card.

 

[tynen]

if you heatsink properly installed? maybe loose and its heating up

I had the same thoughts. Did you make sure the plastic cover between the processor and the thermal grease was taken off?