Windows 7 Unusual problem's

It seems like you're experiencing a couple of different issues with your Windows 7 system while using full-screen games and internet communication programs. Let's address each problem:
### Stuttering/Lag Issue While Gaming and Using Communication Programs:
1. Caps Lock Stuck and Lag: The caps lock light getting stuck and subsequent lagging sounds like a symptom of system overload or conflict. It could be caused by resource contention between your games, communication programs, and other background processes.

2. Potential Solutions:
- Update Drivers: Ensure your graphics card, sound card, and motherboard drivers are up to date.
- Resource Management: Try closing unnecessary programs in the background to free up system resources.
- Compatibility Mode: Running the games or communication programs in compatibility mode might help.
- Check for Malware: Perform a full system scan to check for malware.
- Temperature Monitoring: Monitor the system temperature to ensure overheating is not causing performance issues.
- Power Settings: Make sure your power settings are optimized for performance rather than saving power.
### Random Freezing Issue:
1. Random Freezing: The random freezes could be due to hardware or software issues. Since you suspect the motherboard, it's worth investigating further.

2. Potential Solutions:
- Memory Check: Run Windows Memory Diagnostic tool to ensure your RAM is functioning properly.
- Event Viewer: Check Windows Event Viewer for any critical errors or warnings around the times of the freezes.
- Hard Drive Health: Check the health of your hard drive using tools like CrystalDiskInfo.
- BIOS Update: Updating the motherboard BIOS could potentially resolve compatibility issues.
- Heat Management: Ensure proper ventilation and check for dust buildup, especially around the CPU and GPU.
- Testing Components: Consider testing individual hardware components for failure.
### System Specs and Upgrades:
Your system specs are decent for Windows 7, but upgrading certain components like RAM could improve overall performance, especially for modern games and multitasking.
### Reminder:
Ensure you back up essential data regularly to prevent data loss in case of any hardware failure or system crashes.
Let me know if you need more specific guidance on any of these steps or encounter any difficulties in troubleshooting these issues!