Computer Repair in Rancho Cucamonga, CA
Supreme Tech provides expert computer repair in Rancho Cucamonga for desktop computers, laptops, and all-in-one systems. Our experienced technicians diagnose and fix hardware failures, software errors, virus infections, slow performance, and physical damage with prompt, case-dependent turnaround on most repairs. Every service begins with a diagnostic evaluation and comes with transparent estimate-based pricing and a limited parts and labor warranty where applicable.
We repair all major computer brands including Dell, HP, Lenovo, Asus, Acer, Apple, Samsung, Microsoft Surface, Sony VAIO, and all custom-built PCs. Whether your computer has a cracked screen, a failed hard drive, a virus infection, a blue screen error, or simply won't turn on, our technicians identify the root cause and repair it correctly the first time.
Our shop at 11830 Sebastian Way Ste 103 is open Monday through Sunday, 10 AM to 7 PM. Walk-ins are always welcome. Drop off your computer in the morning and in most cases collect it when the repair is complete. For parts-dependent repairs, we provide a realistic completion timeline and keep you updated.
Computer Repair Services
- Laptop Repair — Screen replacement, battery replacement, SSD upgrade, keyboard, hinge, and charging port repair for all laptop brands.
- Desktop Computer Repair — Hardware diagnostics, power supply replacement, GPU issues, storage upgrades, and OS repair for all desktop brands.
- MacBook Repair — Screen, battery, logic board, liquid damage, keyboard, and SSD upgrades for MacBook Air and MacBook Pro including M1, M2, M3.
- Blue Screen & Boot Failure Repair — BSOD diagnosis, startup loop fixes, boot sector repair, and Windows crash recovery.
- Virus & Malware Removal — Complete removal of ransomware, spyware, adware, and trojans followed by security hardening.
- Hard Drive & SSD Upgrade — Replace a failing HDD or upgrade to a faster SSD with full data migration included.
- RAM Upgrade — Increase system memory to eliminate slowdowns and improve multitasking performance.
- Overheating & Fan Repair — Thermal paste replacement, fan cleaning, and heat sink service to stop overheating shutdowns.
- No Power Computer Repair — Diagnose and repair completely dead computers, laptops, and MacBooks that won't turn on.
- Windows & macOS Repair — Fix OS corruption, failed updates, boot failures, and startup errors with data preserved.
- Data Recovery — Recover files from failed, accidentally deleted, or corrupted hard drives and SSDs.
- Motherboard Repair — Board-level repair for no-power failures, charging circuit issues, and liquid damage.
How Computer Repair Works
Step 1 — diagnostic evaluation: Bring your computer to our Rancho Cucamonga shop. We perform a complete hardware and software diagnostic at no charge and provide a written estimate-based estimate before any work begins.
Step 2 — Repair: Once you approve the estimate, our technicians begin work immediately. Most computers are repaired the prompt, case-dependent. We call or text you when your device is ready.
Step 3 — Quality Check & Warranty: Every repaired computer passes a post-repair quality check. eligible repairs may include a limited parts and labor warranty where applicable — if the same issue returns, we fix it at no charge.
Common Computer Problems We Fix
- Computer running extremely slow or freezing frequently
- Blue screen of death (BSOD) or random crash errors
- Computer won't turn on or won't boot past the startup screen
- Cracked, dark, flickering, or dead laptop screen
- Virus, ransomware, or malware infection
- Hard drive failure — clicking sounds, not recognized, corrupted files
- Overheating and unexpected shutdowns during normal use
- Keyboard, trackpad, or USB ports not working
- Wi-Fi or Bluetooth connection problems
- Windows or macOS update failures and error codes
- Fan running constantly at full speed
- Liquid or water damage
Frequently Asked Questions
How much does computer repair cost? Repair costs vary by service. Virus removal starts at contact Supreme Tech for an estimate. RAM/SSD upgrades run contact Supreme Tech for an estimate including parts. Screen replacements range contact Supreme Tech for an estimate by model. diagnostic evaluation — you see the estimate before we start.
How long does repair take? Most repairs are prompt, case-dependent or within 24 hours. Virus removal, OS repair, and SSD upgrades are typically done the prompt, case-dependent. Logic board repairs take 3–5 business days.
What brands do you repair? All brands — Dell, HP, Lenovo, Asus, Acer, Apple, Samsung, Microsoft Surface, Toshiba, and custom-built PCs.
Is there a warranty? Yes — eligible repairs may include a limited parts and labor warranty where applicable. Same issue within 90 days = free repair.
Can you fix water damage? Yes. Board-level liquid damage repair for laptops and MacBooks. Bring it in immediately — don't charge it.
Can you recover data? Yes. No Data, No Fee where applicable to data-recovery service — you only pay if recovery is successful.
Service Area
We serve computer repair customers throughout Rancho Cucamonga, Ontario, Fontana, Upland, Claremont, Montclair, Chino, Chino Hills, Rialto, San Bernardino, and the greater Inland Empire.
Book a Computer RepairCall (840) 999-1034📍 11830 Sebastian Way Ste 103, Rancho Cucamonga, CA 91730 · 📞 (840) 999-1034 · Mon–Sun 10 AM–7 PM