Mine is during multiplayer: (

ctrl+alt+del but dont end task, just alt tab back can play again

overheat or low power supply

please provide your task manager HDD resource utilization trending during the game play before/during/after and ESPECIALLY during freeze.

a second monitor may help, else enable data logging/log writing to a file etc.

additionally, are you using on board sound card or external sound card? can try lowering the sound channels or even disabling sound completely and see if it helps?

for gpu, is it possible to do a gfx card swap? i have slight suspicion that your graphic card rams may have overheated/faulty.
possible to do a gpu/graphic stress test and see if you can replicate the issue?

a quick run down would be to do a clean uninstall of ALL your pc's drivers, and reinstall all of them on the latest drivers if you haven't already. (don't care other game can or cannot.)

Use the PC resource monitor and check on full Disk IO utilization/response rate (in ms)

normal on ram usage.
can you provide your full pc specs as well?

tried preloader as another member mentioned?
http://www.teamliquid.net/forum/starcraft-...hing-custom-map
goto arcade > search preloader, there's 2 - 1 WOL 1 HOTS

awesome, can temporary rule out hdd for the time being.

done the sound/graphic suggestions earlier yet?

that's a wrong way to troubleshoot, especially when most of us (eg: me, Timber2k7 , at least "solvable") aren't having such problems, and mind you i am running on much lower spec PC.

However sure if you're ok in believing your bro then by all means go ahead.

can try the above suggestions please?

You're welcome.
do keep us posted if it resolved your issue for good yeah