Hello, I do think this thread probably does not belong in this forum (Windows BSOD, Freezing, Restarting Help) but I cannot find a more fitting one here on TechSpot. If there is one, please direct me to it. This is a slightly different problem following the one present in the following thread: Unable to boot Windows (error 0251 ; TMP problem) After all the pain I've endured in the previous problem, I ended having to re-install Vista onto my Laptop, installed most drivers, everything is fine. But I do miss XP considering Vista isn't all the best for gaming, being what I am quite interested about. Just like before, I am unable to install Windows XP onto my laptop, and the reason is still unknown to me. I would insert the Windows XP CD, load all the files, when prompt, I hit Enter and F8, and it tells me the setup did not detect any hard drives to install XP onto. Yet, I am able to install Windows Vista from a bootable USB. I have tried installing XP from USB but it tells me I'm missing boot files (or a file*) As stated in the previous thread, my laptop's cmos battery could be dead, my harddrive can be partially defective or my laptop's SATA cables are. One thing I am quite sure of is that my CMOS battery is dead, as my system prompts me with bad cmos configuration (or something of that sort) every day when I turn on my laptop, and it resets my time and date to a default one (midnight and a date from 2007). Today, I replaced (I might have had a few difficulties doing this and it might not have worked properly) my laptop's CMOS battery with one I took from an unused Desktop computer, so far all seems well, but I'll wait for the next day when I turn my laptop on to be sure. 1. Right now, I'm wondering what may be the problem, and what can be causing this Windows XP installation malfunction. Is it my laptop's optical drive, CMOS battery, SATA cable, SATA hard drive or something else? Here are some information on my laptop, probably not the exact ones, but it should be quite similar enough, mostly the same parts. Any help appreciated. Thank you in advance, Day EDIT: I'm planning on buying a new Hard drive in order to fix my Desktop computer, and it might be a 2.5 inch Solid State Drive. And once I'm done using it to fix the Desktop computer, I might replace my laptop's hard drive with the SSD, as I am suspecting the Hard Drive to be causing the problem stated above. I'm only worried about the lifespan of the current SSD available in the market, so I might end up getting a 2.5 inch hard drive instead as SSD are also very expensive. 2. Do you think this will also help solve the problem stated above?