Best way to avoid breaking your system is to do basic checking before an upgrade. First thing is to check up for updates. Second thing is to check if your CPU meets the minimum requirement for Windows...(any 1.6GHZ CPU and any after will work fine). Other thing to check would be your video card if it is capable of meeting the hardware requirements of Windows. Third thing would be RAM. 4GB of RAM is sufficient but for those upgrading, 8GB of RAM is recommended as it will give more of a productivity boost. Finally, if you are upgrading from Windows 98, check if your motherboard meets the minimum requirements. If it does not, you are in bad shape.
Right-Click on the C: notepad, then select "Open", then enter a MinMum of "1" to the value where it says BIOS Version or "113.94" if the BIOS version is not listed properly (in the older versions).
Now you should see the file name "DMI: Product Name, Version: ", the BIOS Version & Date, CPU Type, Major (Intel's most recent version of the BIOS, 20h) and Minor (Rev number of the BIOS, verref numbers prior to 20h) as well as the size of the BIOS code in KB (not KB/1000) d2c66b5586