hp laptop says missing operating system

stormysch

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when i turned on my laptop it said missing operating system took it in tech says might have been a virus if i do not care abut retrieving data i need to wipe the hard drive and reinstall windows how do i do this.
 

My Computer

Computer type
PC/Desktop
OS
ab
Was windows preinstalled on that laptop?
If yes did you burn a set of recovery disks?
Does the hard drive show up correctly in the BIOS?
Is the BIOS set to boot from that drive?
 

My Computer

Computer type
PC/Desktop
Computer Manufacturer/Model Number
Home Built
OS
Windows 10 Education 64 bit
CPU
AMD Phenom II X4 980 Black Edition Deneb 3.7GHz
Motherboard
Asus M4N68T-M V2 µATX Motherboard
Memory
8GB 4GBx2 Kingston PC10600 DDR3 1333 Memory
Graphics Card(s)
Zotac NVIDIA Geforce GT640 2 Gig DDR3 PCIe
Sound Card
VIA VT1708s High Definition Audio 8-channel Onboard
Monitor(s) Displays
22" LG E2242 1080p and 2 19" I-INC AG191D
Screen Resolution
1280x1024 - 1920x1080 - 1280x1024
Hard Drives
Crucial M100 256 GB SSD and 500 GB WD Blue SATA
PSU
Thermaltake TR 620
Case
Power Up Black ATX Mid-Tower Case
Cooling
Stock heatsink and fan
Keyboard
Logitech Wireless K350 Wave
Mouse
Logitech Wireless M570 Trackman Wheel
Internet Speed
80 Mbps Down 30 Mbps Up
Antivirus
Windows Defender
Browser
Internet Explorer 11
Other Info
HP DVD1040e Lightscribe - External USB2
when i turned on my laptop it said missing operating system took it in tech says might have been a virus if i do not care abut retrieving data i need to wipe the hard drive and reinstall windows how do i do this.
It could be a virus but no prove yet. Do you have a win7 install dvd? Or or system repair disc?

"missing operating system" text is in MBR... a small piece of code which runs just after pc starts. It's sector 0 on physical disk. "missing operating system" means.... it can't find an ACTIVE partition. Maybe partition is not active anymore. Maybe partitions got corrupted. Maybe MBR got corrupted.

All can be fixed. But you need one of the dvd's I asked you.
 

My Computer

Computer type
Laptop
Computer Manufacturer/Model Number
ACER ASPIRE 5742G
OS
Microsoft Windows 7 Home Premium 64-bits 7601 Multiprocessor Free Service Pack 1
CPU
Intel(R) Core(TM) i3 CPU M 370 @ 2.40GHz
Motherboard
Acer Aspire 5742G
Memory
4,00 GB
Graphics Card(s)
ATI Mobility Radeon HD 5400 Series
Sound Card
(1) AMD High Definition Audio Device (2) Realtek High Defi
Screen Resolution
1366 x 768 x 32 bits (4294967296 colors) @ 60 Hz
Hard Drives
WDC WD5000BEVT-22ZAT0
when i turned on my laptop it said missing operating system took it in tech says might have been a virus if i do not care abut retrieving data i need to wipe the hard drive and reinstall windows how do i do this.
Are you typing on a win7 machine now?
 

My Computer

Computer type
Laptop
Computer Manufacturer/Model Number
ACER ASPIRE 5742G
OS
Microsoft Windows 7 Home Premium 64-bits 7601 Multiprocessor Free Service Pack 1
CPU
Intel(R) Core(TM) i3 CPU M 370 @ 2.40GHz
Motherboard
Acer Aspire 5742G
Memory
4,00 GB
Graphics Card(s)
ATI Mobility Radeon HD 5400 Series
Sound Card
(1) AMD High Definition Audio Device (2) Realtek High Defi
Screen Resolution
1366 x 768 x 32 bits (4294967296 colors) @ 60 Hz
Hard Drives
WDC WD5000BEVT-22ZAT0
Not much of a tech if all he said was that!

I yank that HD out and plug it onto my SATA/EIDE to USB adapter to another system to get the real lowdown.

$20 at most for such a rig and highly recommended, if the HD is intact/with data, easy to backup with this, also.
 

My Computer

Computer type
PC/Desktop
Computer Manufacturer/Model Number
Self Built Custom
OS
Windows 7 Ultimate Retail Box (64-bit installed) + Service Pack 1
CPU
AMD FX-8350 CPU v1.15 (or 1.0F) BIOS was required!
Motherboard
MSI 890FXA-GD70
Memory
8G CAS-7 G-Skill DDR3 @1333 (2 fours) [mobo nonOC max rec'd]
Graphics Card(s)
Radeon HD 7950 [3 gigs of GDDR5] MSI Twin Frozr model
Sound Card
Realtek High Definition Audio (onboard mobo, ALC-889 chip)
Monitor(s) Displays
2 WS LED Monitors: One LG One Viewsonic
Screen Resolution
1920 by 1080
Hard Drives
SSD for OS: Samsung 840 Pro
SSD for VM and utilities: Adata SX900
7200 RPM SATA HDs for the rest: Hitachi and Seagate
PSU
Corsair TX850 - 850W max, in service since August 2010.
Case
Thermaltake Armor A90
Cooling
Thermaltake Spin Q CPU Cooler, in service since August 2010
Keyboard
Logitech G11
Mouse
Logitech M310 Wireless
Internet Speed
100 Megabit broadband supposedly upgraded from 50 (Cable)
Antivirus
Bitdefender Internet Security 2014 suite
Browser
Pale Moon 64-bit main, also IceDragon, Opera, and Maxthon.
Other Info
CompTIA A+ certified (220-800 series) in July 2013.
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