I recently installed an ATI Radeon HD4650 video card (model# GV-R465D2-1GI) on a Gigabyte GA-K8NSC-939 motherboard running XP32. Since it was installed, everynight the computer will BSOD/restart. I awake every morning with a "System has recovered from a serious error" message. I was using the driver from the install CD. I went on AMD's website and the only driver they have for it is HotFix 11.5 which was released on 5/9/11. After installing this the system will BSOD on boot up, so I had to safe mode driver roll back. The latest driver that Gigabyte has for the video card is 8.66 RC9 released on 9/28/09. With this driver installed the system will boot, but still gives the orginal problem of "serious error" messages. I currently have this driver installed. This is the Error Signature from the message: BCCode : 100000be BCP1 : B889F9D9 BCP2 : 127C0121 BCP3 : BA4D3C28 BCP4 : 0000000A OSVer : 5_1_2600 SP : 3_0 Product : 768_1 This problem only happens at night while I am sleeping. It never onced happened during the day. I don't use a screen saver and the only program that runs automatically at 1am is Karen's Replicator backup software. It usually runs for 30-90 minutes every night. I am not sure if there is some conflict there. I am not sure of this site's procedure for handling BSOD so please give me the next step I would need to take to resolving this issue. Thank You.