If your 1050ti has a separate power connector (PCIe power either 6-pin or 8-pin) make sure it is plugged in directly from your power supply. Make sure the GPU is fully seated in the slot. Make sure your CPU heatsink is installed properly.

To get back the capacity to boot to windows 7, after you've reinstalled XP, you'll need to boot from the Windows 7 install disk and perform a 'Startup Repair'. Make sure your monitor is connected to the graphics card itself - not the motherboard monitor connector. most likely outcome for XP is that it'll refuse to even boot up! If you need to reinstall XP again that'll render your Windows 7 install unbootable, because the XP install will have changed the boot loader. Your Windows XP install won't be happy at it afterwards though. If you're not happy with the results you can always start over with a clean install later on.

It will push the boundaries on reliability. Some people will take the 'cautious' approach and advise you to clean install again anyway. Windows 11 raises the bar on security, hence the TPM 2.0 chipset requirement. You'll almost certainly need to reactivate afterwards. They'll almost certainly churn away locating and installing suitable device drivers for your new hardware, with no ill-effects other than the install deactivating. Says who? Stjepan, both Windows Vista and Windows 7 handle a motherboard transplant quite well. Yes you must reinstall Windows 7 when you change the hardware out.

Windows 7 change motherboard and cpu