My Dell XPS is taking some serious hardcore verbal abuse in the last few months because it keeps freezing up on my and its about to get throw down the stairs. I purchased the PC about 2 years ago and its been a complete pain ever since. After only a few weeks of having the computer it started to play up on me, freezing while I was surfing the internet, typing a letter / email, playing a game, or just sitting looking at the desktop. The first few times I just ignored it and rebooted. After several weeks of regular freezing up I decided to reinstall Windows Vista to see if that made any difference. I even installed several other operating system including Linux just to make sure this was a hardware issue before reporting it. I have been in contact with Dell Technical Support on several occasions regarding this but I get very little assistance. They asked me to run the Dell Pre-Boot Diagnostics Test, which came up with nothing. I was then asked the reseat the memory, which did nothing. I was then asked to remove all but one of the memory sticks and run the diagnostics test again, which came up with nothing. I repeated this will ALL FOUR of the memory sticks, again nothing. I was asked to remove all the drives and check one at a time, still nothing. Although the problem was reported to Dell Technical Support within a few weeks of buying the PC and regular phone calls regarding the freezing, they actually did NOTHING to help. Now to make it worse then don't want anything to do with me because it is out of my paid warranty period. Terrible technical support, terrible customer services. At the VERY least they should have booked the computer in for repair and looked at it. If they rely on me fixing the computer myself where is the point in having a return to base policy?!?! What happens is I will be using the computer for anything when it will all of a sudden go really slow, as if I was running a 60Mhz CPU. This will last for about 5-15 seconds then freeze completely, although the mouse still works. When this happens the hard drives makes an usual noise in a pattern. Imagine the noise a hard drive makes when you are accessing a large file. Now imagine this on for half a second, then off for 2 seconds, then back on in a repeat pattern. Now here is where it confuses me. When the computer freezes up and I reboot, nine times out of ten it will not come back up, it will hang just after the BIOS screen with the hard drive making that unusual noise. It took me a while to figure this out but the ONLY way to fix this is by running the Dell Pre-Boot Diagnostics Test. This initially checks the memory and cpu. After this has finished, I reboot and the computer is back to normal without any more problems. This is getting very annoying now because it has frozen at least 4 times this week and we are only on Wednesday morning.