Eternal Lagg

My WHOLE computer is lagging. gw is laggy, internet is kinda laggy, everything and every game i have is laggy. it wasnt like this 2 days ago. is it a power supply problem, b/c my power supply makes noises when i turn the comp on??

two things:
Spybot Search & Destroy
Antivirus

Run some speed tests via interent. Reset your router and modem. See if your provider is having issues. If nothing above helps start virus scans multiple. Malware targets your connection.

Edit- check your hard lines make sure a cat or mouse has not nibbled any thing anything. Or that something was disconnected. If you have cable line disconnect all tv's and run a straight shot and then test your computer. signal strength is a big issue and if other things draw they can reduce the the signal.

LOL ME TOO!!! i have a huge lag like every 10 or 15 mins that lasts for 3 mins or so. Its annoying because i got reported yesterday because someone thought i was leeching even though i said "lagging". But i think its the game or something, my internet is fine when im not on GW.