Hi all. The last two weeks of my life have been very frustrating. I have bought a brand new gaming computer over eBay, with the following specs: CPU: Intel 920 2.66GHz GPU: nVidia GeForce GTX 295 RAM: 12GB G-Skill 1333 MHz HDD: 750GB Western Digial PSU: 750W Corsair Sound Card: Creative Sound Blaster Audigy Case: Antec nine hundred two Now, all I own when it comes to Windows is Windows XP Proffesional, 32-bit. So because I have bought a new computer with 12GB of RAM, I decided to install Windows 7 RC 64-bit. I got my computer, installed windows XP, downloaded Windows 7 RC, burned Win7 to a blank DVD, and began a clean installation. Then my problems began... Halfway through the installation, my computer froze. I thought it was just taking a long time to copy the files, so I waited for around half an hour. Nothing happended, the computer was frozen. I restarted the computer, and begang installing from scratch, again. This time it worked like a charm and the instllation was quickly done. I was a happy boy, this was the first time I had seen Windows 7 first hand, and I was impressed with the loading speeds (compared to Vista, which I loathe... Before I got my new comp, I made a thread, asking whether I should use Vista 64bit or Windows 7 RC 64bit. It can be found here). Im glad I didn't purchase Vista. That would have been a waste of money, especially since Windows 7 will be released later this year. Anyway, the installation was done and I began to use my new system. I quickly discovered that there was a problem, my computer just kept on freezing! On average, the computer froze once or twice each hour of use. Sometimes it froze after just 5 minutes, other times after 5 hours! And it was no matter what I did, Gaming, youtube, Word or even standing idle made the computer freeze at seemingly at total random times! That was really frustrating, a brand-new computer system should not freeze! And I simply wouldn't belive it had anything to do with high temperatures, since the Antec ninehundred two is practically a small windmill! I soon began planning a trip to Michigan to commit murder on a certain computer seller... I was very angry. I tried anything I could think of. I benchmarked the entire system several times, tested my CPU, checking the RAM for errors and so on. No errors (well, the computer froze a few times like it always did, but I managed to complete all the tests without error). I tried Google, and the most common reason for a computer to freeze, was new hardware just added, or a malfunctioning harddrive. As luck would have it, I had a spare Western Digital 500GB HDD laying in one of my drawers, so I switched that with the 750GB HDD. I installed Windows 7 on my old hardrive. After around 6 hours, there hadn't been a sinlge freeze. I thought I had now located the problem, and could now (finally) use my new computer without error. But sadly, the joy was short. Later that same day, the computer began freezing again, and it now acted excatly like it did on the 750GB HDD. Damn I had formated and re-installed Windows 7 on both HDD's several times, and the problem just wouldn't go away. It had now been nearly two weeks since I got the computer, and I haven't been able to make full use of it yet. I wanted to contact the seller, but I wasn't sure what to say, since I couldn't locate the problem. If it had only been a malfunctioning HDD, and could have shipped that back and exhanged it for a new one. But alas, that was not to be. Yesterday I got an idea... it didn't make much sense, but I had ran out on options. I plugged in the new 750GB HDD, formated it, and installed my copy of Windows XP 32bit. It has been more than 24 hours now, my computer have hardly been turned off in that period, I have benchmarked everything on my system... and NO FREEZE !!! Oh joy! My computer is actually working! Well, it seems so anyway. But I just don't understand... why does my brand new system run perfect on Windows XP, and like a crippled, suicidal mule on Windows 7 ??? I re-installed Windows 7 several times, and the problem remained. Could it be a bad download? Bad burn to disc? But, if that is indeed the case, why could I even install Windows 7 in the first place? The point of this long post is, I really want to run Windows 7 on my new system (I love what I saw, and I want to make full use of my RAM). Besides, I have been using Windows XP for nearly a decade now, it's time for that relic to retire. What shoud I do ?? Right now, I am downloading another copy of Windows 7 RC, using my girlfriends e-mail. Then I will try to make a clean installation with that. Any hints/advice/help would be much appriciated!