Sorry press enter by mistake! The problem is that my PC( which is now 3 years old) sometimes makes long beeping noises. It usually happens on hot days, ands when it does beep all the programs slow down (usually during games). Ive had a look on the net and I think the problem is overheating. I downloaded a Speedfan monitor program to check the internal temperatures. Two of the temp monitors usually read about 50C and the other reads about 75C, i think this ones my graphics card. I installed a new graphics card a few months ago and someone told me that because it requires a plug in cable from PSU, it mite be causing beeping because my PSU is only 300w and I shud get a more powerful one,ie 500w. I really dont know what to do, any help will be much appreciated!