help me find out what's wrong with the computer

He is about 10 years old

any problems, something doesn't work?
on the pictures everything is in order.

It just won't start

sashakubar Does the
power supply unit give signs of life?

The only thing I can write is that the indicator works

sashakubar
I'm not talking about the fan in it rustles, if not, then go see

Means RIP

sashakubar wrote:
or something is missing here
Well, for example, there is not enough information. What happened before it stopped turning on: reinstalling Windows, cleaning dust, turning off the electricity? Were there any problems in the work: the time "flew", an arbitrary reboot, etc.?

sashakubar
Try with another block and then by excluding the motherboard and RAM.

Len4ik00N
Half a year not included

Fits?

X_ray_83
That is, try to start with a different block?

Vryatli it will help but the brand of the computer formoza

sashakubar
Look: is there a mat. swollen capacitors. Reset BIOS settings. Try to run with only a minimal set of spare parts. If you start, then add parts one by one until you find a broken one. If not, then try to reconnect the power supply or connect another, but in general, if you do not understand much, then it is better to contact a specialist.

is the indicator on? if you haven't turned it on for a long time, take out the battery, put the RAM in some places, blow through all the contacts

Len4ik00N
What?

throw out that bucket of nuts. He's already 5 years old and it's time to retire

sashakubar take the
computer to the workshop, as you obviously don't understand it yourself, but rather to the dump, because 10 years is too much for a company.