Lately everything is lagging

Step 1: Using compressed Air clean out your laptop by blowing air through the vents
Step 2: Scan you computer for virus, malware, spyware using Antivirus, Hijack This, Malwarebytes Anti-Malware
Step 3: Update drivers, BIOS, Software and Windows update

It's possible that the fan died on your computer and everything is getting hot. Your CPU and GPU will downclock themselves if they get too hot to protect against damage.

if your refering to battle field 3 .. its EA's fault they did a server side update and every one is lagging now .. as if we had shitty graphics cards .. or messed up internet .. just check the forums any way i dont know when they will fix it but yesterday it was really bad.. more so on the non premium servers ..

Just checked all of that stuff and its still doing the same thing.

That's a good possibility... how would i check that?

I was talking about LoL.. but now that you mention it i'm scared to try BF3 xD

I'm having this exact same problem. Fan is fine, no virus/malware/spyware, etc. Comp is almost a year old now, never had any problems before. The system itself isn't even getting very hot either. I really can't figure out the problem. But for me it's not just video games anymore, it's everything having lag issues. I checked a lot of programs running in the background and nothing is using much processor power at all, in fact it's only at roughly 10% of the processor being used before I start playing a game, but like I said, it's not just games, it's Word, Firefox, any program I run, when it starts having some kind of program running it starts to lag off and on. Like, let's say I'm loading a web page, the little circle telling me the page is loading will freeze for a second and then start up again, repeatedly and randomly. In Word, I'll go to save a document, I'll click the menu button and the mouse will lock up and the system will freeze for a second and then go back, and it's always off and on, regardless of what I'm doing. I'd LOVE to fix this... Thanks!

If your computer is less than a year old then your all set, I called Dell and the walked me through how to update my BIOS, which almost completely fixed the problem, and then a few days later they sent out a technician who replaced the Motherboard, fan, and coolant; all for free because I was under warranty. If you have Dell this is the number I called 1-800-456-3355, and if not just call who ever made your computer and they will be able to help.