History of Operating Systems: From Batch Jobs to Unix, Windows and Cloud
How operating systems evolved from batch monitors and time-sharing to Unix, DOS, Windows, Linux, mobile and containers, and what stayed the same.
-
-
History of Computers: From Vacuum Tubes to Cloud and AI
A dated timeline of computing from Babbage and ENIAC through transistors, microprocessors, the PC, the internet, mobile and cloud.
-
[Fix] Gigabyte GA-H170M-D3H Boot Loop and Power Issues – No Display
A strict order for fixing a Gigabyte GA-H170M-D3H boot loop or no-display fault: power, CMOS, minimal build, memory, CPU support, BIOS settings and PSU.
-
How to Fix Dell Inspiron 6000 Blank Screen Issue Caused by Faulty Lid Closure
A step-by-step way to tell whether a blank laptop screen is the panel, the cable, the lid sensor or the motherboard, using an external monitor and the Dell LCD test.
-
BIOS vs UEFI: How a PC Starts Before Windows Loads
How BIOS and UEFI boot differently, what MBR, GPT and the EFI System Partition are, and how to check and convert your own PC.
-
Windows Boot Process Step by Step (and How to Fix Each Stage)
The six stages of a UEFI Windows boot, what each one does, the errors it produces and the repair commands to use, from POST to logon.
-
Windows File Systems Compared: NTFS, FAT32, exFAT and ReFS
NTFS, FAT32, exFAT and ReFS compared with limits, use cases, and the difference between converting and formatting a drive.
-
User Mode vs Kernel Mode: How the OS Protects Itself
What user mode and kernel mode are, how system calls cross the boundary, and how to read user versus system CPU time on Windows and Linux.
-
What Was DOS? History, Commands and How to Run It Today
Where MS-DOS came from, how it worked, which of its commands survive in Windows, and how to run DOS safely with DOSBox or FreeDOS.
-
PC Repair Toolkit for Beginners: What You Actually Need
Which tools really belong in a beginner PC repair kit, what to look for if you buy one, and the safety habits that matter more than any tool.
![[Fix] Gigabyte GA-H170M-D3H Boot Loop and Power Issues – No Display - featured illustration](https://sysadmin.co.in/wp-content/uploads/2026/09/fix-gigabyte-ga-h170m-d3h-boot-loop-and--768x432.png)
