PC Startup Issues, possible double-booting

This issue started yesterday, and I thought perhaps it may have been a one off, but the same issue has happened today. So when I press the button to turn on my PC the light comes on and it begins to startup, then after a few seconds it switches itself off, then it comes on again and goes off after a few seconds, and then it comes on again and boots up normally. I did see online something about double-booting, but I don't know where I would start to try and determine the cause.
The only thing I have noticed out of the ordinary is the computer didn't automatically change the time when the clocks went forward, I opened the 'adjust date/time' menu and pressed 'sync now' to get the correct time. I turned off the computer about 20:30 last night, and when I turned the computer on today it had yesterdays date and the time of 20:30. So I am guessing this could be linked to my issue. I thought maybe the CMOS battery is low, but in my experience if a battery was low it would have a date of something like the year 2000 everytime the computer is turned on, which is what I've had on previous computers. But I assume the battery is OK if it has remembered the time from last night. I have had the computer since 2018 and it still has the original CMOS battery, so I'm still not ruling it out as a possible cause.
Any help is much appreciated.

Windows version number: 22H2 19045.4170

So when turning on the computer today the date and time were correct, so I don't think the CMOS battery is at fault, although the time to replace it is probably not far away. To answer the question about windows updates the last update I received was a security update on 1st April.
So the first thing I tried was disabling the fast start-up, that didn't change anything, so then I did the chkdsk c: /scan and everything came out fine, then I did the SFC /SCANNOW, and it said that it had fixed some problems. So I then shut down the computer and turned it on again and everything is working fine again. No idea what caused it but after running the final scan everything is back running normally again.
Thanks to all that offered advice.

So when turning on the computer today the same issue is back again, and also the date and time are wrong, it has the same date from when I last used the computer four days ago. Somebody earlier on in the thread mentioned my BIOS, could the issue be there, if so how would I go about detecting it?

So today I entered the BIOS, and it had a date of 01/01/2017, and a time of 00:01, at this stage I didn't make any changes as I wanted to see what it did when Windows loaded up, and the date and time when the log on screen appeared was the same as when I shut down the computer last night, which was 20:21 14/04/2024. So I don't understand how there are two different times. If I change the date on the BIOS will that sort it, or is there more to it than that. Would this be what is causing the computer to be turning itself on and off several times before booting?

Any advice is much appreciated, I'm not sure what I can try.
As the time when I log on is different to that of the Bios I don't know if changing the time in the Bios would fix it, or is there another issue?

I think this is the CMOS battery. Is Windows set to use Internet time? Double or multiple booting wouldn't strange me with low battery, although there might also be an independent instability issue. With low battery, the CMOS might be managing to keep the date/time but not to advance it with the clock ticks or to do clock ticks (battery voltage goes down very very slowly, for instance the CMOS consumes a lot less than a typical multimeter, a device made to consume as little as possible from the voltage it's measuring, for precision among other reasons). Any weirdness with the BIOS time that I know of is due to low battery, and low battery uses to cause other issues that you cannot track. If you replace the battery, you'll get the time fixed. As for the other issues, they may well get fixed too, that would be the usual, but if they are for other causes, you need a healthy battery to troubleshoot them.