Lenovo ThinkPad T540p User Manual. 2200: Machine Type and Serial Number are invalid. Solution: Machine Type and Serial Number are invalid. Your personal information and card details are 100% secure. Humans have roughly the same number of neurons in it (around 10 million) as other animal species. HP, and Lenovo that will go on sale this. Solved: Hello Experts, I just replaced my t440s mainboard, then now on boot process showing: 2200: Machine Type Invalid and Serial Number are.

I have big problem with my laptop. Laptop is ThinkPad EDGE 14 NVS52CD AMD Athlon II X2 P340 2.2GHz 2048MB 500GB 14.0' LED WXGA.

Problem is: (afer bios check ok) this is a message: WARNING 2200: Machine Type and Serial Number are invalid. 2201: Machine UUID is invalid.

Windows 7 crashes. I have tried to reinstal Windows but without success. It always freezes. When I press CTRL+ALT+DEL lenovo turns off (but it should reset). One service said that EEPROM of BIOS is dead and I should change entire motherboard. I have tried with Lenovo Maintence Tool (bootable usb stick) to enter new serial number but it doesn't work.

I can't read serial number from my computer or even enter the new one. LMT says memory overflow problem when I try to enter new serial. Invalid checksum when I try to read any of serial numbers. Can someone help me?

Buy new laptop or try to change bios chip? Litfiba 17 Re Download Webroot.