Possible power supply (or unknown) problem? Hi guys, I've been reading these forums the last few weeks because I've been having trouble with my computer lately. quick run down. I have a p4 3.2 1024 of ddr400 pc3200 ram I recently upgraded from a nvidia 5700 256mb GPU to the 6800GT 256 mb (AGPX8). When i bought the video card, I purchased this thermaltake PSU http://www.tr2tt.com/products/psu/w006970/w006970.htm I installed both the psu and the gpu at the same time, booting took a bit longer than normal, I get a black screen plus a cursor between the windows loading screen and the logon screen. Somtimes a few minutes, sometimes longer. At first the video card was running slowly. I went through and updated bios and chipset drivers, used drivercleaner to get rid of nvidia drivers and reinstalled the latest drivers (long ordeal when booting took so long after every driver instal). I finally had it working for a few days really nice but then I noticed games starting to chug along again. Then the booting delays returned. Sometimes it would just stay at the black screen, sometimes it would get the longon screen after 10+ min. I wasn't convinced that it was the GPU because I did have it running well for a bit. I origionally was getting some driver crashes but that was fixed. I read a few threads on here about booting problems and power supplies, and the 12v rail. I thought maybe my PSU is the culpret? I don't know much about the amperage and wattage stuff, but was reading a bit and know that maybe mine are running at their max. How can I know if it is the PSU? I might be able to return it to Tigerdirect.ca and upgrade (maybe this one? http://www.tigerdirect.ca/applications/SearchTools/item-details.asp?EdpNo=1160717&CatId=0 the amps on the various rails were higher than my current PSU or this http://www.tigerdirect.ca/applications/SearchTools/item-details.asp?EdpNo=1407918&CatId=0, which is higher on 3.3 and 5 but lower on 12. http://www.tigerdirect.ca/applications/SearchTools/item-details.asp?EdpNo=719599&CatId=0 this one possibly? has 30/50/35A on 3.3/5.5/12V rails). Its been quite frustrating. Going from thinking that I had a dud GPU, maybe windows was acting up. Maybe my memory (havent run memory test yet, was reading about that when i came accross the PSU info). If it is PSU at least its easily fixable. Is it possible that the psu could cause all the other problems like slow game performance because of the gpu being underpowered? (when it worked well i was getting 50-60fps, now I averaged 18fps in aquamark3) PS. you might need to know what my psu is trying to run? so I have the P4 3.2 HT 1024mb of ddr400 pc3200 ram 80+120gb hard drives eVGA 6800GT 256mb (plugged directly to psu) 1 floppy drive 7in1 card reader 2 case fans. I think thats all? Thanks in advance. Kyle pps.. oh I do have my old psu but it was the generic one that was included when I bought my system (which came as i have it now, but with the old gpu, no other changes) I dont think putting that back in will help me see if its the psu because this one isnt as good. It doesnt have the proper chart on it, here is all the info on the label AC input: 115/230V~,6?3A,60?50hz DC output: +3.3= 14.1(org),+5V=35.0A(red),+12=8.0A(yel) +5Vsb=2.0A(purp),-5V=0.3A(white),-12V=0.8A(blue) but there is also a seperate sticker beside the main label that reads: +12V/18A Max. which contradicts the above info which says 8.0A?