Win 7 pro update

Greetings.
Mum's old computer pen 4 cpu cannot run 8 or 10. Runs Pro 7 SP1 32bit/X86
Originally would not update. Last mid 2016. Tried checking for updates a week ago and it checked for 2 hrs and delivered no info. Advised to carry out a reinstall saving all the files etc.
I now have no idea if it's upto date. Suspect that it's way out. But the problems is still the same, update goes around in circles all day with no info. Is there somewhere that I can get all the updates for Win 7 download and install them. I presume any that are already installed would just be rejected.
It seems to be one vicious circle and acquiring a new computer to take W10 id not viable.
I'm sure that this is not a new problem and has been resolved.
Thanks in advance.

SIW2 said:

Dism++x86/x64
1. Run it, click on win7 ( it will highlight blue to show you have selected it ).
2. Click Updates
3. Click Scan

pretty cool

Hi SIW2,
What can I say but brilliant.
Why oh why is this info. not more readily available. MS support could have saved over 12 wasted hours.
DISM++ got the ball rolling with about 160 updates and then the next day MS started to work and provided another 80+.
The time saving is also huge, I have memories of downloading direct from MS taking days.
Thank you very much for your assistance and pointing me towards DISM++