T400 beeps and freezes

I've had my T400 for about a year and a half and have loved it. I'm currently running Windows 7 64-bit and it works great for the most part. However occasionally, like every other week or so, the system starts to beep. The beep is repetitive, almost like a clicking, not as loud as the power or password beep, just about once per second. It doesn't follow any of the patterns on Lenovo's support site ( http://www-307.ibm.com/pc/support/site.wss/MIGR-46018.html). It's just a straight constant beeping. After it begins to beep like this, it freezes up and I have to power cycle the system. Some times I can actually switch windows, or click something before the system actually freezes, but generally it happens within a few seconds. My laptop is almost always on and often I come back to find it beeping and frozen. Any idea as to what this could be? Sadly my system is no longer under warranty.

 

If it is on all the time, have you cleaned the cooling system?

 

Have you updated the Bios? I used to have that on my T400 w/ Windows 7 but a bios update fixed it. Download and run System Update 4 from Lenovo ( www.lenovo.com/support) and see if you need it. Also be sure to get the latest drivers from System Update as well.

 

Thanks for the BIOS update tip. Seems like I just updated it, but I guess it was a couple months ago and there's a newer version. Hopefully that does the trick!