Hello TechPowerUp!!!!! I did something really stupid: I bought me some arctic silver 5 bcause i was out of ceramique. So after i bought it, i decidet to update the thermal paste on m AMD Athlon XP 2400+ CPU. I opened the case carefully and took out the cpu with no problems. I puted on some AS5 and at that moment it sliped out of my hand and fellt onto the kitchen floor (hard floor). I WAS SHOCKED AND!!! I already started thinking ahed : "what would happened, if the cpu would be broken? I only have a 1GHz AMD 1000 for backup, so it would not be fun!!!! :shadedshu So without any BIG worries i finished my job and installed it back to the system. AND THEN : When i pushed the power button, the led's and fans went on for 1 sec and everything turned off itself!!!! I tried it a couple of times on different connections and power supplys...but no answer. I even washed of the thermal paste with 40% alcohol wodka. But NOTHING seems to work. The 1GHz Back up cpu works good, but i want my ATHLON XP, bec it was the first cpu i bought with my own budget for 80$ 5 years ago and 80$ was alot for me when i was 11!!!! I have alot of memorys of happy abd bad times in this prozessor!!!! I already tried resetting cmos. I begging u Tech Power Ups!!!!!! Please help me to figure out waht the problem is and if there is still hope.