Guides & Articles
Practical help written by VNIT technicians in Ho Chi Minh City.
Laptop guides
Why Your Laptop CPU Still Hits 95°C After RepastingOn Intel 13th/14th Gen and Ryzen 7000/8000 the temperature reading tells you almost nothing — wattage does. How to read CPU Package Power.Laptop Repair Cost in Ho Chi Minh City (2026 Guide)Typical laptop and MacBook repair prices in Saigon for expats and foreign companies, and how to avoid tourist-price scams.
Printer & Epson reset articles
Epson Ink Pad End of Service Life: 4 Ways to Reset (2026)Epson says the ink pad is at end of service life (two lights, E-11)? Learn what the waste ink counter really means, the 4 ways to reset it — including VNIT Reset Tool with a free trial reset — and when the pad must be replaced.Reset Epson Printer by Model: Full Lookup TableQuick lookup: for your Epson model (L3110, L3210, L1210, L805, T60, M2140…) find how to reset the waste ink pad counter, whether the waste-ink box has a chip, and the box code. Remote reset nationwide.Epson Two Lights Blinking L3110/L3210: Fix in 4 StepsEpson L3110, L3210 or L1210 flashing two lights and won't print? See the real cause (waste ink pad counter full), tell it apart from a paper jam, and the step-by-step fix per model.Printer Offline / “Printer in an Error State” — How to FixWindows says your printer is offline or “in an error state” even though it is switched on? This is almost always a connection or software problem, not a broken printer. Step-by-step fixes for every brand: uncheck Use Printer Offline, restart the print spooler, fix the network IP, reinstall the driver.Epson Error E-11 / E-12: Causes & How to FixYour Epson shows error E-11 or E-12 on the screen (L3250, L3260, L5290, ET series)? This is the waste ink pad counter. Tell E-11 and E-12 apart, reset correctly, and know when the pad needs work. Remote reset nationwide.Epson Adjustment Program (AdjProg): How to ResetWhat the Adjustment Program (AdjProg) is, the steps to reset the Epson waste ink pad counter, and the important warnings — how to avoid fake/virus-laden tools and the wrong build for your model. Remote reset nationwide.WIC Reset for Epson: Paid Key & the 80% Trial ExplainedWhat the WIC Reset Utility is, why it needs a paid key, and what the free 80% trial really does (it does clear the error — but the counter refills sooner). VNIT resets directly, no WIC key needed.VNIT Reset Tool User Guide — Reset Epson Waste Ink Pad CounterHow to use VNIT Reset Tool: unzip and run, connect the printer with a USB cable, read the waste ink pad counter, use the free trial reset, enter a reset key, then power cycle the printer. Includes fixes for the most common errors.Epson Waste Ink Pad: When a Reset Is Not Enough (2026)A reset does NOT drain the Epson waste ink pad. See the 4 signs the pad is truly full, the 2 pad types (fixed base pad vs removable box), and the permanent fix before ink hits the board.Epson Adjustment Program Errors: Virus Warning, Communication Error, No PortDownloaded the Adjustment Program to reset your Epson but Windows flags it as a virus, you get a communication error, or no USB Port is selectable? Causes and fixes for each — and when to let VNIT reset it remotely instead.Reset Hard-Locked Epson Waste Ink Box: C9345, WF-C5290, L8050, L18050Why some Epson models with a hard-locked C9345 maintenance box (L8050, L18050, L15150, ET-5800…) and WorkForce WF-C5290 cannot be reset to 0% in software — and the three ways to handle it: re-activate the chip, replace the chip, or fit a new maintenance box.Epson Still Blinking / Prints Blank After Reset — Why & How to FixYou reset the Epson waste ink counter but it still blinks two red lights, or prints blank pages afterwards? Common causes (no power cycle, wrong counter, clogged printhead, empty ink, hard-locked chip box) and how to fix each.Reset Epson WorkForce (WF) Waste Ink Pad / Maintenance BoxEpson WorkForce (WF-7830, WF-7840, WF-2830, WF-C5290…) reporting a full waste ink pad / maintenance box? The WF line differs from the L line: many models use a maintenance box with its own code. How to identify and handle it per generation.