Understandable!
Perusal of your system specs don't provide much help.
What specifically?
Are you talking about hard drive, RAM, CPU, GPU, CD/DVD Drive, etc?
Peripheral devices, mouse, keyboard, printer, monitor/display, external hard drive, CD/DVD drive, etc?
For some there is really no diagnostic, if it works it does, if it doesn't or doesn't work correctly, then you attempt to determine the cause.
On old systems, sometimes the thermal paste on a CPU or if you have a separate GPU will deteriorate, that is shrink & crack losing contact with it heat sink. That can cause BSODs and premature failure of that processor.
Hard Drive you can check, hours of operation, bad sectors, etc. RAM you can test to see it if passes. You can stress test your CPU and or GPU and watch temperatures, listen to fan speeds, or monitor them with a program such as speed fan or others.
Most everything else, it works, it doesn't work correctly, or not at all. I imagine you could look inside your printer to look for worn parts, plastic powder etc. Always prudent to keep your equipment clean. Dust free cooling vents, fans, keyboards, etc. Use a can of compressed air for that. No water, alcohol, air compressor like you would use to fill your car tires air, which is way to much pressure. I refrain from having food and liquids anywhere they could possibly spill or contaminate electronics, like keyboard, mouse, laptop, etc.
I don't know how many laptops and keyboards I've services do to pop, water, coffee and food in them.
Snick
